For Those Who Think Their Sin Affects No One Else

“Rabbi Simeon bar Yohai taught: There is a story about men who were sitting on a ship, one of them lifted up a borer and began boring a hole beneath his seat. His companions said to him: ‘What are you sitting and doing?’ He replied to them: ‘What concern is it of yours, I am drilling under my seat?’ They said to him: ‘But the water will come up and flood the ship for all of us.’” ~Lev. R. 4.6.